The gunman who opened fire at an Aurora, Colo., movie theater is expected to plead not guilty by reason of insanity to the more than 150 charges he faces for the July rampage that killed 12 and injured 58 others
An insanity plea would complicate the prosecutors' decision of whether to seek the death penalty against James Eagan Holmes, 25, who entered the Aurora theater shortly after the start of a midnight showing of "The Dark Knight Rises" on July 20, 2012 and sprayed the crowd with gunfire.